Hi
I am probably doing something stupid, but I have something really weird
going on. I am using form_remote_tag (in a page called form), my code
essentially goes:
form_remote_tag
My code
end_form_tag
Then in the controller, under certain conditions I have a redirect_to
This works fine until the redirect_to
On redirect it shows the contents of the new page (login), but this is
not in the source code! The URL does not change to login (it remains
form) and thus the form does not work.
Basically, I just want the controller to forget all form stuff and
redirect properly.
Does anyone have an idea on this one?
Thanks
Darren
View:
<div id="counties">
<table border="1" cellpadding="0" cellspacing
="0">
<tr>
<td>
<%= form_remote_tag :update => "counties", :url => {
:action =>
"form" } %>
<select id="form" name="form"
onchange="this.form.onsubmit();">
<option>Please select</option>
<%= options_from_collection_for_select @counties,
"id",
"county_name", @county_id.to_i%>
</select>
<br>
<select id="form2" name="form2"
onchange="this.form.onsubmit();">
<%= options_from_collection_for_select @districts,
"id",
"district_name", @district_id.to_i%>
</select>
<%if (@institutions)%>
<%for institution in @institutions%>
<%institution.name%>
<%end%>
<br>
<select id="form3" name="form3"
onchange="this.form.onsubmit();">
<%= options_from_collection_for_select @institutions,
"id", "name", @institution_id.to_i%>
</select>
<%end%>
<%= submit_tag "Go" %>
<%= end_form_tag %>
</td>
</tr>
</table>
</div>
controller:
def form
@counties=Countyname.find(:all, :order =>"county_name",
:conditions=>["language_id = ?", session[:language_id]])
if request.post?
@county_id=Countyname.find(:first, :conditions => ["county_id =
?",
params[:form].to_i]).id
end
@districts=District.find(:all, :order => "district_name",
:conditions=>["county_id = ?", @county_id])
if request.post?
@dist=District.find(:first, :conditions => ["id = ? and county_id
?", params[:form2].to_i, @county_id])
if (@dist)
@district_id =@dist.id
else
@district_id=District.find(:first, :conditions => ["county_id
?", @county_id]).id
end
end
if (@district_id && @county_id)
@places=Place.find(:all, :order => "institution_id",
:conditions =>
["district_id = ?", @district_id])
@institutions=[]
for place in @places
@res=Institution.find(:first, :conditions=>["id = ?",
place.id])
@institutions << @res
if request.post?
@institution_id=params[:form3]
end
end
if !(@institution_id.nil?) && (@district_id && @county_id
&&
!@institution_id.empty?)
redirect_to(:controller => "login", :action =>
"login" )
end
end
end
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OK, finally sorted it, but it''s a bit messy. In the view the :update in the form_remote_tag means that the new screen after the redirect is rendered in the old window. You can use this to redirect: render(:text => "<script>window.location.href ''http://localhost:3000/login/login''</script>") Hope this helps someone. If there''s a bettewr solution, I would of course be very interested! Regards Darren -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Hi Darren, Darren Evans wrote:> I am using form_remote_tag > > Then in the controller, under certain conditions > I have a redirect_to > > This works fine until the redirect_toI saw your later post. Glad you found a way to make it work. Here''s another. But first some explanation. The key to avoiding the problem you''re having is understanding the browser-server request cycle. It starts, always, with the browser. In the request that the browser sends to the server, the browser tells the server, via the message type, what kind of response it expects. The server is free to ignore that and send back anything it wants, but the browser will do with that response what it has told the server it will do. In your case, because you''ve used form_remote_tag which generates an XMLHttpRequest, the browser has told the server that it expects an executable response. redirect-to doesn''t send back an executable (i.e., JS). It sends back straight HTML. The browser gets it, tries to execute it as it told the server that it would, and you end up with nada. By putting the render in the :update option, you''ve hacked your way into getting the server to send back the JS response the server expects. It''s not ''wrong'' but that solution won''t lead you very far. A more open-ended solution is to use RJS, either in the controller action or in an RJS view. In your case, in the controller, use: render :update do |page| page.redirect_to(:controller => ''login'', :action => ''login'') end hth, Bill --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Hi Bill
The redirect works, but not I have an intermediate screen with an rjs
error:
try { window.location.href = "/login/register"; } catch (e) {
alert(''RJS
error:\n\n'' + e.toString()); alert(''window.location.href =
\"/login/register\";''); throw e }
Is there any way to get rid of this error. I would like to use your
method, because it is a lot tidier. In my previous version there was
also script in the intermediate window, but the
<script>....</script> go
rid of that.
Thanks a lot for your advice.
Darren
Bill Walton wrote:> Hi Darren,
>
> Darren Evans wrote:
>> I am using form_remote_tag
>>
>> Then in the controller, under certain conditions
>> I have a redirect_to
>>
>> This works fine until the redirect_to
>
> I saw your later post. Glad you found a way to make it work.
Here''s
> another. But first some explanation.
>
> The key to avoiding the problem you''re having is understanding the
> browser-server request cycle. It starts, always, with the browser. In
> the
> request that the browser sends to the server, the browser tells the
> server,
> via the message type, what kind of response it expects. The server is
> free
> to ignore that and send back anything it wants, but the browser will do
> with
> that response what it has told the server it will do. In your case,
> because
> you''ve used form_remote_tag which generates an XMLHttpRequest, the
> browser
> has told the server that it expects an executable response. redirect-to
> doesn''t send back an executable (i.e., JS). It sends back
straight
> HTML.
> The browser gets it, tries to execute it as it told the server that it
> would, and you end up with nada. By putting the render in the :update
> option, you''ve hacked your way into getting the server to send
back the
> JS
> response the server expects. It''s not ''wrong''
but that solution won''t
> lead
> you very far. A more open-ended solution is to use RJS, either in the
> controller action or in an RJS view. In your case, in the controller,
> use:
>
> render :update do |page|
> page.redirect_to(:controller => ''login'', :action
=> ''login'')
> end
>
> hth,
> Bill
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Darren Evans wrote:> try { window.location.href = "/login/register"; } catch (e) { alert(''RJS > error:\n\n'' + e.toString()What''s the error? What does the first alert say about e.toString() ? -- Phlip http://www.greencheese.us/ZeekLand <-- NOT a blog!!! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---